/*
 * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 1999-2002,2004,2005 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.sun.org.apache.xerces.internal.impl.dv.xs;

import javax.xml.datatype.DatatypeConstants;
import javax.xml.datatype.XMLGregorianCalendar;

import com.sun.org.apache.xerces.internal.impl.dv.InvalidDatatypeValueException;
import com.sun.org.apache.xerces.internal.impl.dv.ValidationContext;

/**
 * Validator for <date> datatype (W3C Schema datatypes)
 *
 * @author Elena Litani
 * @author Gopal Sharma, SUN Microsystems Inc.
 * @version $Id: DateDV.java,v 1.7 2010-11-01 04:39:46 joehw Exp $
 * @xerces.internal
 */
public class DateDV extends DateTimeDV {

  public Object getActualValue(String content, ValidationContext context)
      throws InvalidDatatypeValueException {
    try {
      return parse(content);
    } catch (Exception ex) {
      throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.1",
          new Object[]{content, "date"});
    }
  }

  /**
   * Parses, validates and computes normalized version of dateTime object
   *
   * @param str The lexical representation of dateTime object CCYY-MM-DD with possible time zone Z
   * or (-),(+)hh:mm
   * @return normalized dateTime representation
   * @throws SchemaDateTimeException Invalid lexical representation
   */
  protected DateTimeData parse(String str) throws SchemaDateTimeException {
    DateTimeData date = new DateTimeData(str, this);
    int len = str.length();

    int end = getDate(str, 0, len, date);
    parseTimeZone(str, end, len, date);

    //validate and normalize
    //REVISIT: do we need SchemaDateTimeException?
    validateDateTime(date);

    //save unnormalized values
    saveUnnormalized(date);

    if (date.utc != 0 && date.utc != 'Z') {
      normalize(date);
    }
    return date;
  }

  protected String dateToString(DateTimeData date) {
    StringBuffer message = new StringBuffer(25);
    append(message, date.year, 4);
    message.append('-');
    append(message, date.month, 2);
    message.append('-');
    append(message, date.day, 2);
    append(message, (char) date.utc, 0);
    return message.toString();
  }

  protected XMLGregorianCalendar getXMLGregorianCalendar(DateTimeData date) {
    return datatypeFactory.newXMLGregorianCalendar(date.unNormYear, date.unNormMonth,
        date.unNormDay, DatatypeConstants.FIELD_UNDEFINED, DatatypeConstants.FIELD_UNDEFINED,
        DatatypeConstants.FIELD_UNDEFINED, DatatypeConstants.FIELD_UNDEFINED,
        date.hasTimeZone() ? (date.timezoneHr * 60 + date.timezoneMin)
            : DatatypeConstants.FIELD_UNDEFINED);
  }

}
